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Elements A, B, C, D and E have the follo...

Elements A, B, C, D and E have the following electronic configuration:
A: `1 s^2 2 s^2 2 p^1`
B: `1 s^2 2 s^2 2 p^6 3 s^2 3 p^1`
C : `1 s^2 2 s^2 2 p^6 3 s^2 3 p^3`
D : `1 s^2 2 s^2 2 p^6 3 s^2 3 p^5`
which among these will belong to the same group in the periodic table?

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